# Synthesis and nonlinear optical properties of some donor-acceptor oxadiazoles

Mashraqui, Sabir H and Kenny, Rajesh S and Ghadigaonkar, Shailesh G and Krishnan, Anu and Bhattacharya, Mily and Das, Puspendu K (2004) Synthesis and nonlinear optical properties of some donor-acceptor oxadiazoles. In: Optical Materials, 27 (2). pp. 257-260.

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A35OptMater2004.pdf

Heterocyclic 1,3,4-oxadiazole moiety has been used as a new \pi-conjugation relay to prepare a number of donor-acceptor molecules carrying a \pi-electron-rich aromatic ring as a donor and either a p-nitrophenyl or a pyridine/pyridinium ring as an acceptor. Several of these oxadiazoles display significant second-order molecular nonlinearity, $\beta (14-124 x 10^{-30} esu)$ and provide the basis for future design of efficient nonlinear optical materials having the oxadiazole core.